APPARATUS FOR CALCULATING WEIGHTS ASSOCIATED WITH A RECEIVED SIGNAL AND APPLYING THE WEIGHTS TO TRANSMIT DATA

• US 20140204984A1
• Filed: 03/15/2013
• Published: 07/24/2014
• Est. Priority Date: 06/13/2000
• Status: Abandoned Application

• Current Assignee: Comcast Cable Communications LLC (Comcast Corporation)
• Original Assignee: Comcast Cable Communications LLC (Comcast Corporation)
• Inventors: Agee, Brian G., Bromberg, Matthew C.
• Application Number:
  US13/840,630
• Publication Number:
  US 20140204984A1
• Time in Patent Office: Days
• US Class Current: 375/219
• CPC Class Codes: H04B 7/0408 using two or more beams, i.e. beam diversity
• CPC Class Codes: H04B 7/0413 MIMO systems
• CPC Class Codes: H04B 7/0417 Feedback systems
• CPC Class Codes: H04B 7/0443 utilizing "waterfilling" technique
• CPC Class Codes: H04B 7/0456 Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
• CPC Class Codes: H04B 7/0465 taking power constraints at power amplifier or emission constraints, e.g. constant modulus, into account
• CPC Class Codes: H04B 7/10 Polarisation diversity; Directional diversity
• CPC Class Codes: H04L 27/26 Systems using multi-frequency codes H04L27/32 takes precedence
• CPC Class Codes: H04L 27/2602 Signal structure
• CPC Class Codes: H04L 27/2605 Symbol extensions, e.g. Zero Tail, Unique Word [UW]
• CPC Class Codes: H04L 27/2607 Cyclic extensions
• CPC Class Codes: H04L 27/2627 Modulators
• CPC Class Codes: H04L 27/2646 using feedback from receiver for adjusting OFDM transmission parameters, e.g. transmission timing or guard interval length
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/005 of common pilots, i.e. pilots destined for multiple users or terminals
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 40/04 based on wireless node resources
• CPC Class Codes: H04W 52/241 : taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
• CPC Class Codes: H04W 52/265 : taking into account the quality of service QoS
• CPC Class Codes: H04W 52/42 : in systems with time, space, frequency or polarisation diversity
• CPC Class Codes: H04W 72/00 : Local resource management
• CPC Class Codes: H04W 72/04 : Wireless resource allocation
• CPC Class Codes: H04W 72/044 : based on the type of the allocated resource
• CPC Class Codes: H04W 72/0453 : Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/23 : in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/542 : using measured or perceived quality
• CPC Class Codes: H04W 88/08 : Access point devices
• CPC Class Codes: Y02D 30/70 : in wireless communication networks

Abstract

An apparatus for modulating transmit data and adding a cyclic prefix to the transmit data is provided. The apparatus comprises: transceiver hardware that is capable of receiving receive data utilizing multiple input channels and includes at least one first wireless element that is orthogonal frequency division multiplexing-capable, and at least one second wireless element; and circuitry capable of working in association with the transceiver hardware. In operation, the apparatus is configured so as to cause transmission of at least one transmit signal including at least a portion of the transmit data to a node. The apparatus is further configured so as to allow adaptive routing utilizing another route different from a previous route. In addition, the apparatus is configured such that the adaptive routing includes allowing routing as a function of a link quality associated with at least one link.

Claims

1. An apparatus, comprising:

transceiver hardware that is capable of receiving receive data utilizing multiple input channels and includes at least one first wireless element that is orthogonal frequency division multiplexing-capable, and at least one second wireless element; and

circuitry capable of working in association with the transceiver hardware, the circuitry capable of causing the apparatus to;

modulate transmit data; and

add a cyclic prefix to the transmit data;

wherein the apparatus is configured so as to cause transmission of at least one transmit signal including at least a portion of the transmit data to a node;

wherein the apparatus is further configured so as to allow adaptive routing utilizing another route different from a previous route;

wherein the apparatus is further configured such that the adaptive routing includes allowing routing as a function of a link quality associated with at least one link.

2. The apparatus of claim 1, wherein the apparatus is further configured for variably changing a coding associated with the modulation.

3. The apparatus of claim 1, wherein the apparatus is further configured for variably changing a coding associated with the modulation as a function of a signal-to-interference-and-noise ratio (SINR).

4. The apparatus of claim 1, wherein the apparatus is further configured for variably changing a rate associated with the modulation.

5. The apparatus of claim 1, wherein the apparatus is further configured for variably changing a rate associated with the modulation as a function of a signal-to-interference-and-noise ratio (SINR).

6. The apparatus of claim 1, wherein the apparatus is further configured for selecting at least one weight applied to the transmit data, based on feedback received from the node.

7. The apparatus of claim 1, wherein the apparatus is further configured so as to dynamically change a transmit channel to another channel different from a previous channel.

8. The apparatus of claim 1, wherein the apparatus is further configured such that the link quality involves a failure.

9. The apparatus of claim 1, wherein the apparatus is further configured such that the adaptive routing includes routing as a function of a link failure associated with the at least one link.

10. The apparatus of claim 1, wherein the apparatus is further configured such that the link quality involves a signal-to-interference-and-noise ratio (SINR).

11. The apparatus of claim 1, wherein the apparatus is further configured for performing beamforming in association with the at least one transmit signal.

12. The apparatus of claim 1, wherein the apparatus is further configured for performing coordinated power control of a transmit power.

13. The apparatus of claim 1, wherein the apparatus is further configured for performing coordinated power control of a transmit power for each of a plurality of channels.

14. The apparatus of claim 1, wherein the apparatus is further configured for performing coordinated power control of a transmit power for each of a plurality of links.

15. The apparatus of claim 1, wherein the apparatus is further configured for performing power control by variably changing a coding or a rate associated with the modulation.

16. The apparatus of claim 1, wherein the apparatus is further configured for performing power control by incrementally adjusting a power level.

17. An apparatus, comprising:

at least one multiple-input/orthogonal frequency division multiplexing-capable receiver; and

circuitry capable of working in association with the at least one multiple-input/orthogonal frequency division multiplexing-capable receiver, the circuitry capable of causing the apparatus to;

allow linkage to a plurality of multiple-input-and-multiple-output-capable nodes;

identify first information that is capable of being used in association with setting a power level;

add a cyclic prefix to a transmit data; and

multiplex the transmit data with at least one pilot signal;

wherein the apparatus is configured such that the at least one multiple-input/orthogonal frequency division multiplexing-capable transceiver is capable of causing transmission of at least one transmit signal including at least a portion of the transmit data and at least a portion of the at least one pilot signal to at least one of the multiple-input-and-multiple-output-capable nodes, utilizing the power level that is set based on the first information;

wherein the apparatus is further configured such that the at least one multiple-input/orthogonal frequency division multiplexing-capable transceiver is capable of allowing receipt of reception data in a manner such that at least a portion of the reception data is redundantly received at the apparatus utilizing a plurality of different diversity channels;

wherein the apparatus is further configured so as to allow linkage between the apparatus and a first one of the multiple-input-and-multiple-output-capable nodes utilizing a first link;

wherein the apparatus is further configured to allow linkage between the apparatus and a second one of the multiple-input-and-multiple-output-capable nodes utilizing a second link, based on a link quality of the first link.

18. The apparatus of claim 17, wherein the linkage to the plurality of multiple-input-and-multiple-output-capable nodes includes:

linking to a first multiple-input-and-multiple-output-capable node utilizing a first spatial or polarization diversity channel, and linking to a second multiple-input-and-multiple-output-capable node utilizing a second spatial or polarization diversity channel, during the linking to the first multiple-input-and-multiple-output-capable node utilizing the first spatial or polarization diversity channel.

19. The apparatus of claim 17, wherein the linkage to the plurality of multiple-input-capable nodes utilizes feedback for multiple-output minimum mean-square error (MMSE) beam or null steering.